I am of the opinion that when a National Cemetary reaches 90% capacity, there should be constructed a Masolium that would hold the remains of those who have been there for more than 100 years.
In the case of Arlington, this would cover Civil War through WWI
I know some would feel that this is not right, but I am of the opinion that re-internment can be done properly and with dignity. This policy would create more “space” for others that need to be buried.
I will let you do the digging.